[sdiy] Expo Converter and Tempco

[sdiy at oveloe.com]

Hi,

We finally settled for the ENS-76 option 1 VCO as our base design, it can be
seen here http://home.att.net/~synthsource/ens76/vco2.htm We're also
going to be building the expo converter from the same circuit (it's the one I
understand the most). But at this point, we need tempcos, they mention tellabs
q81 which is a 2k 3500ppm/degrees celcius (some say 3300ppm/...) precision
resistor. Which one is more precise, 3500 or 3300?

Anybody has few (5-8) for sale or knows a place to get them for less than 8$
each?

Thanks a lot

Charles